Ionic activity measuring device

Details Ionic activity measuring device Ionic activity measuring device

1982-08-30

1985-05-14

Douglas, Winston A.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204 1T, 204400, 324158F, 324452, G01N 2746

Patent

active

045170711

ABSTRACT:
An ionic activity measuring device comprising a substrate provided with at least one opening for receiving a terminal made of a metal layer or a metal layer and a water insoluble metal salt layer, an ion selecting layer positioned on or in the substrate, and at least one liquid receiving hole for bringing liquid into contact with the ion selecting layer at the point vertically aligning with the opening in the substrate. The liquid receiving hole is formed in a porous bridge positioned on the ion selecting layer or on a bridge supporting material which is discrete from the ion selecting layer, or is formed in the substrate. The substrate may be a flexible film, and the device may further comprise a film feeding housing provided with a shaft for feeding the film and a film receiving housing provided with a wind-up shaft.

REFERENCES:
patent: 4020830 (1977-05-01), Johnson et al.
patent: 4053381 (1977-10-01), Humblen et al.
patent: 4180771 (1979-12-01), Guckel
patent: 4184936 (1980-01-01), Paul et al.
patent: 4273639 (1981-06-01), Gottermeier
patent: 4305802 (1981-12-01), Koshiishi

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